Thanks for the response.  I attempted to use spandsp_start_fax_detect, but am receiving an "Invalid Application spandsp_start_fax_detect" outputted in the log file.  I see the module spandsp being loaded properly.  Is there something else I need in order to use that command?

Thanks.

On Fri, Nov 29, 2013 at 7:41 PM, Ali Pey <alipey@gmail.com> wrote:

You can use something like this:

<action application="set" data="execute_on_answer=spandsp_start_fax_detect transfer 'fax XML default' 5"/>

The chances are that some faxes won't get detected but I have never heard that regular phone calls would go to fax.

More details are here:

http://wiki.freeswitch.org/wiki/Mod_spandsp

Regards,

Ali Pey

On Wed, Nov 27, 2013 at 2:16 PM, Everyday User <everydayuser11@gmail.com> wrote:

We receive an inordinate amount of spam fax calls to FreeSwitch that we do not need to handle for any reason. I came across this method,https://wiki.freeswitch.org/wiki/Misc._Dialplan_Tools_fax_detect, to hopefully detect and drop these calls. Is there any danger of this method mistaking any live calls and dropping those on accident or is there a better method to accomplish this? Thanks in advance.

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